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United States Patent | 6,209,750 |
Remmel | April 3, 2001 |
A cover for a cooking vessel with a strengthened edge comprises a central portion having a downwardly depending skirt with an upper portion substantially the same outer diameter as the cooking vessel, a diametrically inwardly offset lower portion having a doubled wall thickness and a substantially horizontal offset portion formed between the upper and lower portions of the skirt. A method of forming a strengthened edge on a cover for a cooking vessel includes flattening an inwardly rolled bead formed on a cut edge of a downwardly depending skirt of a cover blank, the flattening process forming a diametrically inward offset in the lower portion of the downwardly depending skirt and mechanically sealing the cut edge of the skirt to the lower portion of the skirt.
Inventors: | Remmel; Wayne R. (Kewaskum, WI) |
Assignee: | Regal Ware, Inc. (Kewaskum, WI) |
Appl. No.: | 138930 |
Filed: | August 24, 1998 |
Current U.S. Class: | 220/796; 220/573.1; 220/912 |
Intern'l Class: | A47J 036/06; B65D 043/00 |
Field of Search: | 220/796,573.1,912,801,678,641 |
850143 | Apr., 1907 | Donnelly | 220/573. |
1618675 | Feb., 1927 | Quigley | 220/573. |
1701384 | Feb., 1929 | McGarvey. | |
1799205 | Apr., 1931 | Wood | 220/641. |
2688419 | Sep., 1954 | Henchert | 220/678. |
2719645 | Oct., 1955 | Wyman. | |
2934236 | Apr., 1960 | Groves | 220/678. |
4258695 | Mar., 1981 | McCarton et al. | 220/573. |
Foreign Patent Documents | |||
188749 | Apr., 1937 | CH | 220/641. |
4-28423 | Jan., 1992 | JP. | |
4-33725 | Feb., 1992 | JP. |